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Example of Actual Model for Linear Dynamic Analysis

Actual Model Examples for Linear Dynamic Analysis

Analysis model

The linear dynamic analysis was performed with the machine parts shown in Fig. 9.5.1 as the actual models. For the analysis model, four cases were considered as verification examples with different load conditions and damping coefficients, as presented in Table 9.5.1.

Table 9.5.1: Verification Example of Actual Model for Linear Dynamic Analysis
Case Name Element Type Verification Model Loading Conditions Damping Conditions No. of Nodes No. of Degrees of Freedom
EX31A 342 Mesh model Step load (F0) No 15,214 45,642
EX31B 342 Step load (F0) Yes 15,214 45,642
EX31C 342 Square wave pulse (F1) No 15,214 45,642
EX31D 342 Square wave pulse (F1) Yes 15,214 45,642

Mesh Model

Fig. 9.5.1 : Mesh Model

Analysis results

Examples of the analysis results are shown in Fig. 9.5.2 ~ Fig. 9.5.3.

(a) In the case of Step Load

(a) In the case of Step Load

(b) In the case of Square Wave Pulse Load

(b) In the case of Square Wave Pulse Load

Fig. 9.5.2: Time history of vibration point displacement \(u_z\)

(a) t=5.0E-04(s)

(a) t=5.0E-04(s)

(b) t=4.0E-03(s)

(b) t=4.0E-03(s)

Fig. 9.5.3: Deformation diagram and equivalent stress distribution (deformation ratio of 5.0), EX31C